[DainBramage]

How much can air weigh?

[Excellence]

1 cubic foot of air at standard temperature and pressure assuming average composition weighs approximately 0.0807 lbs. A sensitive enough scale would pick it up.

[G Larry]

You guys must have missed Bill Cosby’s “Why is their air” album.

or, never changed a tire.

[timestax]

In the NFL, each team brings 12 Wilson footballs to the game and uses its own. As such, the Patriots' offense uses one set of footballs and those are taken off the field when possession shifts. The Colts then bring theirs into rotation. It is not uncommon for teams to try to alter, however slightly but within the acceptable limits between 12.5 and 13.5 pounds, the ball that is most agreeable to their quarterback. So if New England was actually using an illegally inflated ball, it would only help their offense and not hurt the Colts' offense.

[MarineBrat]

Another air factoid... take a column of air that is one square inch in area, and extend it into space. The air in that column would weigh 14.7 lbs, which is why the standard air pressure at sea level is 14.7 lbs per square inch.

[Lonesome in Massachussets]

The amount of air required to inflate a football weights about 5 grams. If the ball was partially deflated that might mean one or two grams were removed.

The official weight of an NFL football is 410-450 grams. Dry. Four of five raindrops can weigh a milligram. You cannot reliably get any idea of the inflation of a football from its weight.